Published 2020 | Version v1
Journal article Metadata-only

Probing the fission properties of neutron-rich actinides with the astrophysical r process

Creators

  • 1. Joint Institute for Nuclear Astrophysics Center for the Evolution of the Elements (United States)
  • 2. University of Notre Dame, Notre Dame, Indiana 46556 (United States)
  • 3. Theoretical Division, Los Alamos National Lab, Los Alamos, NM, 87545 (United States)
  • 4. Los Alamos Center for Space and Earth Science Student Fellow, Los Alamos National Lab, Los Alamos, NM, 87545 (United States)
  • 5. Department of Physics, University of California, Davis, CA 95616 (United States)
  • 6. Nuclear and Chemical Science Division, Lawrence Livermore National Laboratory, Livermore, CA 94551 (United States)

Description

We review recent work examining the influence of fission in rapid neutron capture (r-process) nucleosynthesis which can take place in astrophysical environments. We briefly discuss the impact of uncertain fission barriers and fission rates on the population of heavy actinide species. We demonstrate the influence of the fission fragment distributions for neutron-rich nuclei and discuss currently available treatments, including recent macroscopic-microscopic calculations. We conclude by comparing our nucleosynthesis results directly with stellar data for metal-poor stars rich in r-process elements to consider whether fission plays a role in the so-called 'universality' of r-process abundances observed from star to star.

Availability note (English)

Available from https://www.epj-conferences.org/articles/epjconf/pdf/2020/18/epjconf_fpy2020_04002.pdf; https://doaj.org/article/76add6a5aa9e4364822a5eead5bd9358

Additional details

Identifiers

URL
https://www.epj-conferences.org/articles/epjconf/pdf/2020/18/epjconf_fpy2020_04002.pdf; https://doaj.org/article/76add6a5aa9e4364822a5eead5bd9358;
DOI
10.1051/epjconf/202024204002;

Publishing Information

Journal Title
EPJ. Web of Conferences
Journal Volume
242
Journal Page Range
vp.
ISSN
2100-014X

Conference

Title
International Workshop on Fission Product Yields
Acronym
FPY 2019
Dates
30 Sep - 4 Oct 2019
Place
Santa Fe, NM (United States)

INIS

Country of Publication
France
Country of Input or Organization
France
INIS RN
53093291
Subject category
S73: NUCLEAR PHYSICS AND RADIATION PHYSICS; S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
Resource subtype / Literary indicator
Conference
Descriptors DEI
ACTINIDES; ASTROPHYSICS; FISSION; FISSION BARRIER; FISSION FRAGMENTS; NEUTRON REACTIONS; NEUTRON-RICH ISOTOPES; NEUTRONS; NUCLEOSYNTHESIS; R PROCESS; STARS
Descriptors DEC
BARYON REACTIONS; BARYONS; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; ELEMENTARY PARTICLES; ELEMENTS; ENERGY; EVOLUTION; FERMIONS; HADRON REACTIONS; HADRONS; ISOTOPES; METALS; NUCLEAR FRAGMENTS; NUCLEAR POTENTIAL; NUCLEAR REACTIONS; NUCLEON REACTIONS; NUCLEONS; PHYSICS; POTENTIAL ENERGY; POTENTIALS; RADIOISOTOPES; STAR EVOLUTION; SYNTHESIS